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hu

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(Computer Science) Hungary
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References in periodicals archive ?
Because there is no reference standard for Hounsfield unit (HU) cutoff for the hyperdense paraspinal vein, the determination was made on a subjective basis, not with region-of-interest (ROI) measurement.
The diagnosis of renal AML is established using computed tomography (CT), showing negative fat density [between -10 and -100 Hounsfield unit (HU)] with an accuracy rate of 86% (3,4).
At this level, the CT values in the abdominal aorta and its three branches, the portal vein and its two branches, and the inferior vena cava were all greater than 340 hounsfield unit (HU).
The attenuation coefficient at the basal cistern was 25-40 HU (Hounsfield unit) with a mean of 30-35 HU consistent with pseudo-SAH.
day 5 313.61 [+ or -] 369.87 0.274 Total volume of drainage 1847.89 [+ or -] 1241.41 0.015 (from day 2 to 5) Accumulation 2327.61 [+ or -] 1527.21 0.011 (from day 1 to 5) Mean duration of drain (day) 7.0 [+ or -] 3.80 0.207 Mean length of stay (day) 12.72 [+ or -] 6.40 0.282 Discharge with drain 0 (people) Complication 0 0.400 Yes 1 (5.6%) No 17 (94.4%) Incidence of lymphocele (3) 1 month 3/18 (16.7%) 0.670 3 months 6/18 (33.3%) 0.126 (1) Vol.: volume; (2) drain: drain from Hemovac for 24 hr; (3) incidence of lymphocele: hypodense content with negative -18 Hounsfield unit * (HU) by computed tomography images; data are expressed as the means [+ or -] standard deviation, medians (range), or frequencies (percentages), as appropriate.
Use of computed tomography scout film and Hounsfield unit of computed tomography scan in predicting the radio-opacity of urinary calculi in plain kidney, ureter, and bladder radiographs.
Parameters Values n (%) Patients, n 235 Age, mean [+ or -] SD, years 37.6 [+ or -] 10.8 Gender Male 188 (80.0) Female 47 (20.0) Stone laterality Right 106 (45.1) Left 129 (54.9) Stone size, mean [+ or -] SD, mm 9.0 [+ or -] 2.5 < 10 179 (76.2) > 10 56 (23.8) Stone location Upper calyx 5 (2.1) Middle calyx 15 (6.4) Lower calyx 22 (9.4) Pelvis 48 (20.4) Upper ureter 67 (28.5) Lower ureter 78 (33.2) Stone density, mean [+ or -] SD, HU 859.0 [+ or -] 241.0 SSD, mean [+ or -] SD, mm 106.0 [+ or -] 22.0 Stent Present 48 (20.4) Absent 187 (79.6) ESWL sessions, mean [+ or -] SD 1.8 [+ or -] 0.9 Shock waves, mean [+ or -] SD 7259.0 [+ or -] 3920.0 SD: standard deviation; HU: hounsfield unit; SSD: skin-to-stone distance; ESWL: extracorporeal shockwave lithotripsy.
(13) - fat poor AML - - Absence of fat at CT MRI: Magnetic resonance imaging, CT: Computed tomography, PEComa: Perivascular epithelioid cell tumor, AML: Angiomyolipoma, HU: Hounsfield unit
Contrast Enhanced Computed Tomography (CECT) revealed bilateral enlarged, swollen kidneys with slightly reduced cortical thickness owing to bilateral perinephric fluid collections which had an average CT density of 3 Hounsfield Unit. The collections had multiple non enhancing septae within them.
(5,6) The density of stone measured by NCCT, stone Hounsfield Unit (HU) varies with stone composition and determines the fragility of a calculus which ultimately governs the clinical outcome in ESWL.
The mean CT value was 40 Hounsfield unit for solid parts, and fluorodeoxyglucose uptake increased, and the maximal standard uptake value was 2.6 [Figure 1].